<div class="figureContainer">
    <div class="figureMain">
        <div class="triangle"></div><!--三角形-->
        <div class="trapezoid"></div><!--梯形-->
        <div class="star"></div><!--五角星-->
    </div>
    <ng-content *ngTemplateOutlet="append"></ng-content>
    <ng-template #append>
        <h1>插槽测试</h1>
    </ng-template>
</div>
